Buscar
Itens para a visualização no momento 11-13 of 13
Utilização de líquidos iônicos na síntese de enonas e de enaminonas
(Universidade Federal de Santa Maria, 2009-03-05)
The use of ionic liquids 1-butyl-3-methylimidazolium tetrafluorborate ([BMIM] [BF4]) and 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]) as
catalytic solvent in the synthesis of 1,1,1-trichloro(fluoro)-3-a ...
Síntese de 2-fenil-3H-pirimidin-4-onas 6-metilsubstituídas e 4- trifluormetil-2-ureído pirimidinas
(Universidade Federal de Santa Maria, 2009-01-12)
This study was carried out in three parts: At first, three methods for the bromination of 6-alkylsubstituted 2-phenyl-3H-pyrimidin-4-ones was developed for the synthesis of: (i) a new series of 6-alkylsubstituted ...
Heterociclização entre 4-alcóxi-1,1,1-triflúor-3-alquen-2-onas e hidrazonas: metodologias seletivas para a obtenção de heterociclos trifluormetilados
(Universidade Federal de Santa Maria, 2009-07-31)
Several methods for the regioselective synthesis of trifluoromethylated heterocycles from 4-alcoxy-1,1,1-trifluoro-3-alken-2-ones and hydrazones are described. In the first part of this work, a series of (E)-2-[N ...